Step 25: Done! (Almost)

Step 26: To be continued...

The project if far from completed, though. What it is missing is: A test with different analog signals (I am missing an analog signal generator);...

Step 21: Preparing a Shield Connector

I have always been annoyed by the connectors that I could find to make an Arduino shield, because they always have pins that are too short and the boards that I use can be soldered only on one side. So I made up a little trick to make the pins longer so they can be soldered and inserted in the Arduino.

Inserting the pin strip into the board, as on the picture, we can push the pins, to have them only on one side of the black plastic. Then we can solder them on the same side where they will be inserted in the Arduino.